Across
- 5. The heart has ____ chambers
- 6. lower chamber of the heart that pumps blood into the lungs or body
- 7. The heart is a _____ that pumps blood throughout the body
- 8. The ___ circulation loop moves blood from the heart to the body
- 10. In blood pressure, the ____ number is the force of blood against artery walls when the heart contracts and pumps blood
- 12. upper chamber of the heart that receives blood from the body or lungs
- 13. you can tell how fast your heart is beating by counting your ___ in your wrist or neck
- 14. the force of circulating blood against the walls of your blood vessels
Down
- 1. the main artery that supplies blood to the body
- 2. this organ (not the heart) rules the emotions
- 3. vessels that move blood away from the heart
- 4. vessels that return blood to the heart
- 6. prevents blood from flowing when moving from one chamber to another
- 9. these vessels supply blood to the heart
- 11. The ___ circulation loop moves blood from the heart to the lungs
